CVE-2022-35217

Code execution via unchecked packet header length

Published Aug 2, 2022 · Updated Sep 16, 2024

Stack-based buffer overflow in NHI Health Insurance Web Service Component on Windows allows local users to execute arbitrary code. The web-service packet handler fails to validate the network packet header length, so an oversized header causes a stack-based out-of-bounds write. Exploitation requires general user privileges and local-area-network access; successful attacks can run system commands or interrupt the service.

CVSS severity7.8
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in NHI Health Insurance Web Service Component on Windows allows local users to execute arbitrary code. The web-service packet handler fails to validate the network packet header length, so an oversized header causes a stack-based out-of-bounds write. Exploitation requires general user privileges and local-area-network access; successful attacks can run system commands or interrupt the service.

The record

CVE
CVE-2022-35217
Published
Aug 2, 2022
Updated
Sep 16, 2024
Vendor
National Health Insurance Administration
Product
NHI Health Insurance Web Service Component
Classifications
CWE-787, T1210
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 2, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=dae0509e5aabde2f110ce8418af67cf7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

National Health Insurance Administration · NHI Health Insurance Web Service Componentversion=dae0509e5aabde2f110ce8418af67cf7

Published CVSS scores

7.8TWCERT/CCCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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